Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation; either version 3 of the License, or (at your option) any later

 * version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 51

 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us at info AT

 * gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.export.impl;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Properties;

import org.apache.commons.io.IOUtils;

import org.cresques.cts.IProjection;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.export.ExportManager;

import org.gvsig.export.ExportProcess;

import org.gvsig.fmap.dal.feature.FeatureStore;

/**

 * Default {@link ExportManager} implementation.

 *

 * @author gvSIG Team

 * @version $Id$

 */

public class DefaultExportManager implements ExportManager {

    private static final Logger LOG = LoggerFactory.getLogger(DefaultExportManager.class);

    private static class DefaultExportFilter implements ExportFilter {

        private final String name;

        private final String expression;

        public DefaultExportFilter(String name, String expression) {

            this.name = name;

            this.expression = expression;

        }

        @Override

        public String getName() {

            return name;

        }

        @Override

        public String getExpression() {

            return expression;

        }

    }

    private Map<String, ExportFilter> filters = null;

    private File homeFolder = null;

    public DefaultExportManager() {

        super();

    }

    private void loadFilters() {

        this.filters = new HashMap<>();

        if (this.homeFolder != null) {

            File filtersFile = new File(this.homeFolder, "filters");

            if (filtersFile.exists()) {

                FileInputStream fis = null;

                try {

                    fis = new FileInputStream(filtersFile);

                    Properties properties = new Properties();

                    properties.load(fis);

                    for (Object name : properties.keySet()) {

                        String value = (String) properties.get(name);

                        ExportFilter filter = new DefaultExportFilter((String) name, value);

                        this.filters.put(filter.getName(), filter);

                    }

                } catch (IOException ex) {

                    LOG.warn("Can't load filters file '" + filtersFile.getAbsolutePath() + "'.", ex);

                } finally {

                    IOUtils.closeQuietly(fis);

                }

            }

        }

    }

    public void saveFilters() {

        if (this.homeFolder != null) {

            Properties properties = new Properties();

            for (ExportFilter filter : this.filters.values()) {

                properties.setProperty(filter.getName(), filter.getExpression());

            }

            File filtersFile = new File(this.homeFolder, "filters");

            FileOutputStream fos = null;

            try {

                fos = new FileOutputStream(filtersFile);

                properties.store(fos, "");

            } catch (IOException ex) {

                LOG.warn("Can't load filters file '" + filtersFile.getAbsolutePath() + "'.", ex);

            } finally {

                IOUtils.closeQuietly(fos);

            }

        }

    }

    public Map<String,ExportFilter> getFiltersAsMap() {

        if (this.filters == null) {

            loadFilters();

        }

        return this.filters;

    }

    @Override

    public List<ExportFilter> getFilters() {

        List<ExportFilter> l = new ArrayList<>();

        l.addAll(this.getFiltersAsMap().values());

        return l;

    }

    @Override

    public ExportFilter getFilter(String filterName) {

        return this.getFiltersAsMap().get(filterName);

    }

    @Override

    public ExportFilter addFilter(String name, String expression) {

        ExportFilter filter = new DefaultExportFilter(name, expression);

        this.filters.put(filter.getName(), filter);

        return filter;

    }

    @Override

    public void setHomeFolder(File homeFolder) {

        this.homeFolder = homeFolder;

    }

    @Override

    public ExportProcess createProcess() {

        ExportProcess process = new DefaultExportProcess();

        return process;

    }

    @Override

    public ExportProcess createProcess(FeatureStore store) {

        ExportProcess process = new DefaultExportProcess();

        process.setSourceFeatureStore(store);

        return process;

    }

    @Override

    public ExportProcess createProcess(FeatureStore store, IProjection contextProjection) {

        ExportProcess process = new DefaultExportProcess();

        process.setSourceFeatureStore(store);

        process.setContextProjection(contextProjection);

        return process;

    }

}